Water heater



April l0, 1928. 1,665,506

w. PFI-:IL x-:T AL

WATER HEATER Filed July ze. 1926 z sheets-snm 1 April 1o, 192s.

W. PFEIL ET AL WATER HEATER u Filed July 29.3926

2 Sheets-Sheet 2 /5 /fe/j qo//me/'e l Attorney Patented Apr. 10, 192.8.

"UNITED STATES l 1,665,506 PATENT OFFICE.

` WATER HEATER.

Application led July 29, 1926. Serial No. 125,722.

, This invention relates to an improved water heater and it has morespecific reference to a device of this kind which is in the form of anattachment for a domestic oil burning stove.

Our principal aim is to'supply a device which may be attached to anordinary oil stove so that persons depending upon stoves of this classmay be able to conveniently obtain hot water by simply setting thedevice removably upon the stove and associating it with the burners,whereby toV utilize the flame from the latter to generate heat forheating the water.

Briefly, the invention has reference to a device of this kind whichincludes a water containing tank to setupon the stove top, together withdepending tubes for association with the burners, and means forpropelling the heat through the tank to effectively heat a considerableportion of the water due to the tortuous passage taken.

The structural features and advantages of the invention will becomeapparent from the following description and drawings.

In the accompanying drawings forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame Figure 1 is a side View of a conventional oil stove, showing theheater in place thereon,

Fig. 2 is a bottom plan view of the heater per se removed from thestove,

Fig. 3 is a central vertical section through the heater,

Fig. 4 is a cross section taken approximately upon the plane of the line4-4 of Fig. 1,

Fig. 5 is an end elevation of the heater,

Fig. 6 is an enlarged transverse section taken approximately upon theplane of thev line 67-6 of Fig. 1.

Referring to the drawings in detail, it will be seen that the referencecharacter 1 designates a sheet metal tank of general rectangular form,the same being constructed with a horizontal heat conducting passage 2spaced slightly above the bottom. This passage opens through theopposite end of the tank. Depending from the bot tom wall of the passageare tapered tubes 3 housed within depending sleeves 4 extendingdownwardly from the bottom of the tank. The space between the tubes andsleeves constitutes a water space and obviously, there is a web 5 at thebottom connecting each sleeve and tube together.v Moreover, as shown inFig. 4, there is a neck 6 connecting the sleeve with the tube andforming an air passage and this sleeve is covered by a watertightsliding closure 7 in the form of an arcuate plate slidably mounted invertical guides 8, and carrying a transparent window 9.

Obviously the tubes and sleeves are adapted to rest upon the flange 10on the oil stove burner 11. Branches 12 of a cold water supply pipe areconnected with the sleeves as shown in Fig. 4. Disposed on the exteriorof the tank are shields 13, each of which includes a downwardly flaredvertical branch 14 and a horizontal branch 15, the last named branchcooperating with the top of the tank. In addition, the hot watersupgrates or grids are removed from the oil'L stove and the flat bottomof the tank 1 is placed in contact with the top of the stove as shown inFig. 1. In so doing, the connected sleeves and tubes are inserteddownwardly through the openings in the top of the stove and permit it torest upon the burner heads as shown plainly in Fig. 4.

Air is supplied to the burners through the adjustable closures and theburners may be ignited through the necks 6. Obviously, when the sleevesand tank are filled with water, and when the burners are lighted, thetubes 3 and walls of the passage 2 will be heated and the surroundingwater will in turn be heated. The heat and particles of combustion,whichk are comparatively few, will pass through the open ends of thepassage 2 and upwardly through the shields 13, thus heating greater areaof the tank. After the water has been heated to the desired degree, andassuming that it is desired to force it through the hot water conductinglpipe 16, the cold water cut-olf valve 21 is opened, allowing the coldwater to literally liush the tank of the hot water. In some instances,it may be desired to obtain hot water through the spigot 20. However,this is ordinarily used as a drain for the system.

It is believed that by considering the description in connection withthe drawings,

persons familiar with devices of this class will be able to .obtain .a,Clear understanding of the same. Therefore, a 'more lengthy descriptionis thought unnecessary.

While the preferred embodiment of the invention has been shown enddescribed, it is to be understood that minor changes coining Within thefield of the invention claimed maybe resorted to if desired.

Having thus described our invention, what As e newproduct ofmanufacture, a Wate heater comprising an elongated substantiallyrectangular' tank `adapted to rest upon WALTER PFEIL. y WALTER KOLMEIER.

